May a boarded unit make a defensive fire on a vehicle trying to get around a vehicle the defending unit is boarded on?

once aunit has dismounted from a transport may it move in the same movement phase?

Ebay is the place.  Also, try buying boosters cases and you will be able to build multiple armies, one for you and one for your brother.  do a search ob axis and allies mini boosters and you may hit a gold mine.  Also, trying contacting the seller and see if he will sell you multiple case for a deat, IE 3 for $200, plus shipping.  This will give you nearly 225 units.  Good luck, Dan